From 5e527213a2430bb3018e5eebd909aef294edf9b5 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Fri, 18 Dec 2020 18:48:46 +0300
Subject: Switch to build2

---
 xsd-examples/cxx/parser/performance/.gitignore     |   7 +
 xsd-examples/cxx/parser/performance/README         |  46 +++
 xsd-examples/cxx/parser/performance/buildfile      |  57 ++++
 xsd-examples/cxx/parser/performance/driver.cxx     | 346 +++++++++++++++++++++
 xsd-examples/cxx/parser/performance/gen.cxx        |  79 +++++
 xsd-examples/cxx/parser/performance/gen.testscript |   9 +
 xsd-examples/cxx/parser/performance/test-50k.xml   |   1 +
 xsd-examples/cxx/parser/performance/test.xsd       |  49 +++
 xsd-examples/cxx/parser/performance/time.cxx       |  46 +++
 xsd-examples/cxx/parser/performance/time.hxx       | 110 +++++++
 10 files changed, 750 insertions(+)
 create mode 100644 xsd-examples/cxx/parser/performance/.gitignore
 create mode 100644 xsd-examples/cxx/parser/performance/README
 create mode 100644 xsd-examples/cxx/parser/performance/buildfile
 create mode 100644 xsd-examples/cxx/parser/performance/driver.cxx
 create mode 100644 xsd-examples/cxx/parser/performance/gen.cxx
 create mode 100644 xsd-examples/cxx/parser/performance/gen.testscript
 create mode 100644 xsd-examples/cxx/parser/performance/test-50k.xml
 create mode 100644 xsd-examples/cxx/parser/performance/test.xsd
 create mode 100644 xsd-examples/cxx/parser/performance/time.cxx
 create mode 100644 xsd-examples/cxx/parser/performance/time.hxx

(limited to 'xsd-examples/cxx/parser/performance')

diff --git a/xsd-examples/cxx/parser/performance/.gitignore b/xsd-examples/cxx/parser/performance/.gitignore
new file mode 100644
index 0000000..19c9761
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/.gitignore
@@ -0,0 +1,7 @@
+driver-expat
+driver-xerces
+gen
+
+# Testscript output directory (can be symlink).
+#
+test-gen
diff --git a/xsd-examples/cxx/parser/performance/README b/xsd-examples/cxx/parser/performance/README
new file mode 100644
index 0000000..46137d0
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/README
@@ -0,0 +1,46 @@
+This example measures the performance of XML parsing in the C++/Parser
+mapping. It also shows how to structure your code to achieve the maximum
+performance for this operation.
+
+The example consists of the following files:
+
+test.xsd
+  XML Schema which describes the test vocabulary.
+
+test-50k.xml
+  Test XML document.
+
+gen.cxx
+  Program to generate a test document of desired size.
+
+time.hxx
+time.cxx
+  Class definition that represents time.
+
+test-pskel.hxx
+test-pskel.ixx
+test-pskel.cxx
+  Parser skeletons generated by the XSD compiler from test.xsd.
+
+driver.cxx
+  Driver for the example. It first parses the command line arguments
+  and reads the entire document into a memory buffer. It then creates
+  a SAX parser and pre-parses and caches the schema if validation is
+  enabled (Xerces-C++ only). Finally, it runs the performance
+  measurement loop which on each iteration parses the XML document
+  from the in-memory buffer.
+
+To run the example on a test XML document simply execute:
+
+$ ./driver test-50k.xml
+
+The -v option can be used to turn on validation in the underlying XML
+parser (only makes sense for Xerces-C++, off by default). The -i option
+can be used to specify the number of parsing iterations (1000 by default).
+For example:
+
+$ ./driver -v -i 100 test-50k.xml
+
+To generate the test document execute, for example:
+
+$ ./gen 633 test-100k.xml
diff --git a/xsd-examples/cxx/parser/performance/buildfile b/xsd-examples/cxx/parser/performance/buildfile
new file mode 100644
index 0000000..10111d6
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/buildfile
@@ -0,0 +1,57 @@
+# file      : cxx/parser/performance/buildfile
+# license   : not copyrighted - public domain
+
+import libs = libxsd%lib{xsd}
+
+import libxerces = libxerces-c%lib{xerces-c}
+import libexpat  = libexpat%lib{expat}
+
+./: doc{README}
+
+# exe{driver-{xerces,expat}}
+#
+for p: 'xerces' 'expat'
+{
+  # Make sure that obje{time} doesn't depend on the parser library that varies
+  # for different exe{driver-*} targets. Think of -I... options passed to the
+  # compiler while compiling time.cxx, which would vary depending on exe
+  # target time.cxx is a prerequisite of.
+  #
+  ./: exe{driver-$p}: obje{driver-$p time}         \
+                      {hxx ixx cxx}{test-$p-pskel} \
+                      $libs $(lib$p)
+
+  exe{driver-$p}: xml{test-50k}: test.input = true
+
+  obje{driver-$p}: cxx{driver} $libs $(lib$p)
+
+  <{hxx ixx cxx}{test-$p-pskel}>: xsd{test} $xsd
+  {
+    # Note: we can't use $p in the buildscript since it will be substituted by
+    # the latest $p value.
+    #
+    parser = $p
+  }
+  {{
+    diag xsd ($<[0]) # @@ TMP
+
+    $xsd cxx-parser --std c++11            \
+         --generate-inline                 \
+         --skel-file-suffix -$parser-pskel \
+         --xml-parser $parser              \
+         --output-dir $out_base            \
+         $path($<[0])
+  }}
+}
+
+obje{time}: {hxx cxx}{time}
+
+# exe{gen}
+#
+./: exe{gen}: cxx{gen} testscript{gen}
+
+# Build options.
+#
+cxx.poptions =+ "-I$out_base" "-I$src_base"
+
+obje{driver-xerces}: cxx.poptions += -DXERCES_PARSER
diff --git a/xsd-examples/cxx/parser/performance/driver.cxx b/xsd-examples/cxx/parser/performance/driver.cxx
new file mode 100644
index 0000000..4ac0265
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/driver.cxx
@@ -0,0 +1,346 @@
+// file      : cxx/parser/performance/driver.cxx
+// copyright : not copyrighted - public domain
+
+#include <string>
+#include <memory>  // std::unique_ptr
+#include <cstddef> // std::size_t
+#include <fstream>
+#include <sstream>
+#include <iostream>
+
+#include "time.hxx"
+
+#ifdef XERCES_PARSER
+#  include "test-xerces-pskel.hxx"
+
+#  include <xercesc/sax2/SAX2XMLReader.hpp>
+#  include <xercesc/sax2/XMLReaderFactory.hpp>
+#  include <xercesc/framework/MemBufInputSource.hpp>
+#  include <xercesc/validators/common/Grammar.hpp>
+#  include <xercesc/util/PlatformUtils.hpp>
+#  include <xercesc/util/XMLUni.hpp>
+
+#  include <xsd/cxx/xml/sax/bits/error-handler-proxy.hxx>
+#  include <xsd/cxx/parser/error-handler.hxx>
+#else
+#  include "test-expat-pskel.hxx"
+#endif
+
+// No-op parser implementation.
+//
+namespace test
+{
+  struct enum_pimpl: enum_pskel, xml_schema::string_pimpl
+  {
+    virtual void
+    post_enum ()
+    {
+    }
+  };
+
+  struct record_pimpl: record_pskel
+  {
+    virtual void
+    int_ (unsigned int)
+    {
+    }
+
+    virtual void
+    double_ (double)
+    {
+    }
+
+    virtual void
+    name (const std::string&)
+    {
+    }
+
+    virtual void
+    string (const std::string&)
+    {
+    }
+
+    virtual void
+    choice1 (const std::string&)
+    {
+    }
+
+    virtual void
+    choice2 (const std::string&)
+    {
+    }
+
+    virtual void
+    choice3 (const std::string&)
+    {
+    }
+
+    virtual void
+    choice4 (const std::string&)
+    {
+    }
+
+    virtual void
+    apple (bool)
+    {
+    }
+
+    virtual void
+    orange (unsigned long long)
+    {
+    }
+  };
+
+  struct root_pimpl: root_pskel
+  {
+  };
+}
+
+using namespace std;
+
+int
+main (int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    cerr << "usage: " << argv[0] << " [-v] [-i <count>] test.xml" << endl
+         << "\t -v turn on validation (default is off)" << endl
+         << "\t -i number of iterations to perform (default is 1000)" << endl;
+    return 1;
+  }
+
+  bool validate (false);
+  unsigned long iter (1000);
+  const char* file (0);
+
+  // Parse command line arguments.
+  //
+  for (int i (1); i < argc; ++i)
+  {
+    string arg (argv[i]);
+
+    if (arg == "-v")
+    {
+      validate = true;
+    }
+    else if (arg == "-i")
+    {
+      if (++i == argc)
+      {
+        cerr << "argument expected for the -i option" << endl;
+        return 1;
+      }
+
+      iter = 0;
+      istringstream is (argv[i]);
+      is >> iter;
+
+      if (iter == 0)
+      {
+        cerr << "invalid argument for the -i option" << endl;
+        return 1;
+      }
+    }
+    else
+    {
+      file = argv[i];
+      break;
+    }
+  }
+
+  if (file == 0)
+  {
+    cerr << "no input file specified" << endl;
+    return 1;
+  }
+
+  try
+  {
+    // Instantiate and connect parsers.
+    //
+    xml_schema::unsigned_int_pimpl unsigned_int_p;
+    xml_schema::double_pimpl double_p;
+    xml_schema::ncname_pimpl ncname_p;
+    xml_schema::string_pimpl string_p;
+    xml_schema::boolean_pimpl boolean_p;
+    xml_schema::unsigned_long_pimpl unsigned_long_p;
+
+    test::enum_pimpl enum_p;
+    test::record_pimpl record_p;
+    test::root_pimpl root_p;
+
+    record_p.parsers (unsigned_int_p,
+                      double_p,
+                      ncname_p,
+                      string_p,
+                      string_p,
+                      string_p,
+                      string_p,
+                      string_p,
+                      enum_p,
+                      boolean_p,
+                      unsigned_long_p);
+
+    root_p.parsers (record_p);
+
+    // Read the fine into in-memory buffer.
+    //
+    ifstream ifs;
+    ifs.exceptions (ios_base::failbit);
+    ifs.open (file, ios::in | ios::ate);
+
+    size_t size (ifs.tellg ());
+    ifs.seekg (0, ios::beg);
+
+    char* buf = new char[size];
+    ifs.read (buf, size);
+    ifs.close ();
+
+    cerr << "document size:  " << size << " bytes" << endl
+         << "iterations:     " << iter << endl;
+
+    os::time time (0);
+    xml_schema::document doc (root_p, "test", "root");
+
+#ifdef _XERCES_VERSION
+
+    // Xerces-C++ as the underlying XML parser.
+    //
+    using namespace xercesc;
+
+    namespace xml = xsd::cxx::xml;
+    namespace parser = xsd::cxx::parser;
+
+    XMLPlatformUtils::Initialize ();
+
+    {
+      MemBufInputSource is (
+        reinterpret_cast<XMLByte*> (buf), size, file, false);
+      is.setCopyBufToStream (false);
+
+      unique_ptr<SAX2XMLReader> parser (XMLReaderFactory::createXMLReader ());
+
+      parser->setFeature (XMLUni::fgSAX2CoreNameSpaces, true);
+      parser->setFeature (XMLUni::fgSAX2CoreNameSpacePrefixes, true);
+      parser->setFeature (XMLUni::fgXercesValidationErrorAsFatal, true);
+
+      if (validate)
+      {
+        parser->setFeature (XMLUni::fgSAX2CoreValidation, true);
+        parser->setFeature (XMLUni::fgXercesSchema, true);
+        parser->setFeature (XMLUni::fgXercesSchemaFullChecking, false);
+
+        // Xerces-C++ 3.1.0 is the first version with working multi import
+        // support.
+        //
+#if _XERCES_VERSION >= 30100
+        parser->setFeature (XMLUni::fgXercesHandleMultipleImports, true);
+#endif
+
+        // Initialize the schema cache. To detect schema errors we will
+        // need an error handler.
+        //
+        parser::error_handler<char> eh;
+        xml::sax::bits::error_handler_proxy<char> ehp (eh);
+        parser->setErrorHandler (&ehp);
+
+        if (!parser->loadGrammar ("test.xsd", Grammar::SchemaGrammarType, true))
+        {
+          // In Xerces-C++ grammar loading failure results in just a warning.
+          // Make it a fatal error.
+          //
+          eh.handle ("test.xsd", 0, 0,
+                     parser::error_handler<char>::severity::fatal,
+                     "unable to load schema");
+        }
+
+        eh.throw_if_failed ();
+        parser->setFeature (XMLUni::fgXercesUseCachedGrammarInParse, true);
+
+#if _XERCES_VERSION >= 30100
+        parser->setFeature (XMLUni::fgXercesLoadSchema, false);
+#endif
+      }
+      else
+      {
+        parser->setFeature (XMLUni::fgSAX2CoreValidation, false);
+        parser->setFeature (XMLUni::fgXercesSchema, false);
+        parser->setFeature (XMLUni::fgXercesSchemaFullChecking, false);
+      }
+
+      os::time start;
+
+      for (unsigned long i (0); i < iter; ++i)
+      {
+        root_p.pre ();
+        doc.parse (is, *parser);
+        root_p.post_root ();
+      }
+
+      os::time end;
+      time = end - start;
+    }
+
+    XMLPlatformUtils::Terminate ();
+
+#else
+
+    XSD_UNUSED (validate);
+
+    // Expat as the underlying XML parser.
+    //
+    XML_Parser xml_parser (XML_ParserCreateNS (0, ' '));
+    string public_id (file);
+
+    os::time start;
+
+    for (unsigned long i (0); i < iter; ++i)
+    {
+      // Using the low-level Expat-specific API to parse the memory
+      // buffer.
+      //
+      root_p.pre ();
+      doc.parse_begin (xml_parser, public_id);
+
+      XML_Parse (xml_parser, buf, size, 1);
+
+      doc.parse_end ();
+      root_p.post_root ();
+
+      XML_ParserReset (xml_parser, 0);
+    }
+
+    os::time end;
+    time = end - start;
+
+    XML_ParserFree (xml_parser);
+
+#endif
+
+    delete[] buf;
+
+    cerr << "time:           " << time << " sec" << endl;
+
+    double ms (time.sec () * 1000000ULL + time.nsec () / 1000ULL);
+
+    // Calculate throughput in documents/sec.
+    //
+    double tpd ((iter / ms) * 1000000);
+    cerr << "throughput:     " << tpd << " documents/sec" << endl;
+
+    // Calculate throughput in MBytes/sec.
+    //
+    double tpb (((size * iter) / ms) * 1000000/(1024*1024));
+    cerr << "throughput:     " << tpb << " MBytes/sec" << endl;
+  }
+  catch (const xml_schema::exception& e)
+  {
+    cerr << e << endl;
+    return 1;
+  }
+  catch (std::ios_base::failure const&)
+  {
+    cerr << "io failure" << endl;
+    return 1;
+  }
+}
diff --git a/xsd-examples/cxx/parser/performance/gen.cxx b/xsd-examples/cxx/parser/performance/gen.cxx
new file mode 100644
index 0000000..5c11343
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/gen.cxx
@@ -0,0 +1,79 @@
+// file      : cxx/parser/performance/gen.cxx
+// copyright : not copyrighted - public domain
+
+#include <fstream>
+#include <sstream>
+#include <iostream>
+
+using namespace std;
+
+static const char* enums[] =
+{
+  "romance",
+  "fiction",
+  "horror",
+  "history",
+  "philosophy"
+};
+
+int
+main (int argc, char* argv[])
+{
+  if (argc != 3)
+  {
+    cerr << "usage: " << argv[0] << " <count> <output-file>" << endl;
+    return 1;
+  }
+
+  unsigned long n (0);
+  istringstream is (argv[1]);
+  is >> n;
+
+  if (n == 0)
+  {
+    cerr << "record count argument should be a positive number" << endl;
+    return 1;
+  }
+
+  ofstream ofs (argv[2]);
+
+  if (!ofs.is_open ())
+  {
+    cerr << "unable to open '" << argv[2] << "' in write mode" << endl;
+    return 1;
+  }
+
+  ofs << "<t:root xmlns:t='test' " <<
+    "xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' " <<
+    "xsi:schemaLocation='test test.xsd'>";
+
+  unsigned short ch (1), en (0);
+
+  for (unsigned long i (0); i < n; ++i)
+  {
+    ofs << "<record orange=\"" << i << "\"";
+
+    if (i % 2 == 0)
+      ofs << " apple=\"true\"";
+
+    ofs << ">"
+        << "<int>42</int>"
+        << "<double>42345.4232</double>"
+        << "<name>name123_45</name>";
+
+    if (i % 2 == 1)
+      ofs << "<string>one two three</string>";
+
+    ofs << "<choice" << ch << ">" << ch << " choice</choice" << ch << ">"
+        << "<enum>" << enums[en] << "</enum>"
+        << "</record>";
+
+    if (++ch > 4)
+      ch = 1;
+
+    if (++en > 4)
+      en = 0;
+  }
+
+  ofs << "</t:root>";
+}
diff --git a/xsd-examples/cxx/parser/performance/gen.testscript b/xsd-examples/cxx/parser/performance/gen.testscript
new file mode 100644
index 0000000..1dc6d66
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/gen.testscript
@@ -0,0 +1,9 @@
+# file      : cxx/parser/performance/gen.testscript
+# license   : not copyrighted - public domain
+
+: 50k
+:
+{
+  $* 317 test-50k.xml &test-50k.xml;
+  cat test-50k.xml >>>$src_base/test-50k.xml
+}
diff --git a/xsd-examples/cxx/parser/performance/test-50k.xml b/xsd-examples/cxx/parser/performance/test-50k.xml
new file mode 100644
index 0000000..42e22f3
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/test-50k.xml
@@ -0,0 +1 @@
+<t:root xmlns:t='test' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='test test.xsd'><record orange="0" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>romance</enum></record><record orange="1"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>fiction</enum></record><record orange="2" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>horror</enum></record><record orange="3"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>history</enum></record><record orange="4" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>philosophy</enum></record><record orange="5"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>romance</enum></record><record orange="6" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>fiction</enum></record><record orange="7"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>horror</enum></record><record orange="8" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>history</enum></record><record orange="9"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>philosophy</enum></record><record orange="10" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>romance</enum></record><record orange="11"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>fiction</enum></record><record orange="12" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>horror</enum></record><record orange="13"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>history</enum></record><record orange="14" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>philosophy</enum></record><record orange="15"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>romance</enum></record><record orange="16" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>fiction</enum></record><record orange="17"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>horror</enum></record><record orange="18" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>history</enum></record><record orange="19"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>philosophy</enum></record><record orange="20" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>romance</enum></record><record orange="21"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>fiction</enum></record><record orange="22" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>horror</enum></record><record orange="23"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>history</enum></record><record orange="24" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>philosophy</enum></record><record orange="25"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>romance</enum></record><record orange="26" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>fiction</enum></record><record orange="27"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>horror</enum></record><record orange="28" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>history</enum></record><record orange="29"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 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choice</choice2><enum>romance</enum></record><record orange="306" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>fiction</enum></record><record orange="307"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>horror</enum></record><record orange="308" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>history</enum></record><record orange="309"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>philosophy</enum></record><record orange="310" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>romance</enum></record><record orange="311"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>fiction</enum></record><record orange="312" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>horror</enum></record><record orange="313"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>history</enum></record><record orange="314" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>philosophy</enum></record><record orange="315"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>romance</enum></record><record orange="316" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>fiction</enum></record></t:root>
\ No newline at end of file
diff --git a/xsd-examples/cxx/parser/performance/test.xsd b/xsd-examples/cxx/parser/performance/test.xsd
new file mode 100644
index 0000000..450a800
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/test.xsd
@@ -0,0 +1,49 @@
+<?xml version="1.0"?>
+
+<!--
+
+file      : cxx/parser/performance/test.xsd
+copyright : not copyrighted - public domain
+
+-->
+
+<schema targetNamespace="test" xmlns:t="test"
+        xmlns="http://www.w3.org/2001/XMLSchema">
+
+  <simpleType name="enum">
+    <restriction base="string">
+      <enumeration value="romance"/>
+      <enumeration value="fiction"/>
+      <enumeration value="horror"/>
+      <enumeration value="history"/>
+      <enumeration value="philosophy"/>
+    </restriction>
+  </simpleType>
+
+  <complexType name="record">
+    <sequence>
+      <element name="int" type="unsignedInt"/>
+      <element name="double" type="double"/>
+      <element name="name" type="NCName"/>
+      <element name="string" type="string" minOccurs="0" maxOccurs="1"/>
+      <choice>
+        <element name="choice1" type="string"/>
+        <element name="choice2" type="string"/>
+        <element name="choice3" type="string"/>
+        <element name="choice4" type="string"/>
+      </choice>
+      <element name="enum" type="t:enum"/>
+    </sequence>
+    <attribute name="apple" type="boolean"/>
+    <attribute name="orange" type="unsignedLong" use="required"/>
+  </complexType>
+
+  <complexType name="root">
+    <sequence>
+      <element name="record" type="t:record" maxOccurs="unbounded"/>
+    </sequence>
+  </complexType>
+
+  <element name="root" type="t:root"/>
+
+</schema>
diff --git a/xsd-examples/cxx/parser/performance/time.cxx b/xsd-examples/cxx/parser/performance/time.cxx
new file mode 100644
index 0000000..c8c1002
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/time.cxx
@@ -0,0 +1,46 @@
+// file      : cxx/parser/performance/time.cxx
+// copyright : not copyrighted - public domain
+
+#include "time.hxx"
+
+#if defined (WIN32) || defined (__WIN32__)
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>  // GetSystemTimeAsFileTime
+#else
+#  include <time.h>     // gettimeofday
+#  include <sys/time.h> // timeval
+#endif
+
+#include <ostream> // std::ostream
+#include <iomanip> // std::setfill, std::setw
+
+namespace os
+{
+  time::
+  time ()
+  {
+#if defined (WIN32) || defined (__WIN32__)
+    FILETIME ft;
+    GetSystemTimeAsFileTime (&ft);
+    unsigned long long v (
+      ((unsigned long long) (ft.dwHighDateTime) << 32) + ft.dwLowDateTime);
+
+    sec_  = static_cast<unsigned long> (v / 10000000ULL);
+    nsec_ = static_cast<unsigned long> ((v % 10000000ULL) * 100);
+#else
+    timeval tv;
+    if (gettimeofday(&tv, 0) != 0)
+      throw failed ();
+
+    sec_  = static_cast<unsigned long> (tv.tv_sec);
+    nsec_ = static_cast<unsigned long> (tv.tv_usec * 1000);
+#endif
+  }
+
+  std::ostream&
+  operator<< (std::ostream& o, time const& t)
+  {
+    return o << t.sec () << '.'
+             << std::setfill ('0') << std::setw (9) << t.nsec ();
+  }
+}
diff --git a/xsd-examples/cxx/parser/performance/time.hxx b/xsd-examples/cxx/parser/performance/time.hxx
new file mode 100644
index 0000000..a22f671
--- /dev/null
+++ b/xsd-examples/cxx/parser/performance/time.hxx
@@ -0,0 +1,110 @@
+// file      : cxx/parser/performance/time.hxx
+// copyright : not copyrighted - public domain
+
+#ifndef TIME_HXX
+#define TIME_HXX
+
+#include <iosfwd> // std::ostream&
+
+namespace os
+{
+  class time
+  {
+  public:
+    class failed {};
+
+    // Create a time object representing the current time.
+    //
+    time ();
+
+    time (unsigned long long nsec)
+    {
+      sec_  = static_cast<unsigned long> (nsec / 1000000000ULL);
+      nsec_ = static_cast<unsigned long> (nsec % 1000000000ULL);
+    }
+
+    time (unsigned long sec, unsigned long nsec)
+    {
+      sec_  = sec;
+      nsec_ = nsec;
+    }
+
+  public:
+    unsigned long
+    sec () const
+    {
+      return sec_;
+    }
+
+    unsigned long
+    nsec () const
+    {
+      return nsec_;
+    }
+
+  public:
+    class overflow {};
+    class underflow {};
+
+    time
+    operator+= (time const& b)
+    {
+      unsigned long long tmp = 0ULL + nsec_ + b.nsec_;
+
+      sec_ += static_cast<unsigned long> (b.sec_ + tmp / 1000000000ULL);
+      nsec_ = static_cast<unsigned long> (tmp % 1000000000ULL);
+
+      return *this;
+    }
+
+    time
+    operator-= (time const& b)
+    {
+      if (*this < b)
+        throw underflow ();
+
+      sec_ -= b.sec_;
+
+      if (nsec_ < b.nsec_)
+      {
+        --sec_;
+        nsec_ += 1000000000ULL - b.nsec_;
+      }
+      else
+        nsec_ -= b.nsec_;
+
+      return *this;
+    }
+
+    friend time
+    operator+ (time const& a, time const& b)
+    {
+      time r (a);
+      r += b;
+      return r;
+    }
+
+    friend time
+    operator- (time const& a, time const& b)
+    {
+      time r (a);
+      r -= b;
+      return r;
+    }
+
+    friend bool
+    operator < (time const& a, time const& b)
+    {
+      return (a.sec_ < b.sec_) || (a.sec_ == b.sec_ && a.nsec_ < b.nsec_);
+    }
+
+  private:
+    unsigned long sec_;
+    unsigned long nsec_;
+  };
+
+  std::ostream&
+  operator<< (std::ostream&, time const&);
+}
+
+#endif // TIME_HXX
-- 
cgit v1.1